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A Novel Nonsense Mutation p.L9X in the SRY Gene Causes Complete Gonadal Dysgenesis in a 46,XY Female Patient SRY基因中一种新的无义突变p.L9X导致46,XY女性患者完全性腺发育不良
Pub Date : 2016-08-08 DOI: 10.4172/2157-7412.1000300
A. Tajouri, Maryem M’sahli, S. Hizem, L. B. Jemaa, F. Maazoul, R. Mrad, H. Chaabouni, M. Kharrat
Mammalian sex is determined by a gene localized on the Y chromosome known as SRY (sex-determining region of the Y chromosome). SRY is a transcription factor that plays a key role in the initiation of the cascade of male sexual differentiation. In 46,XY humans, SRY mutations cause complete gonadal dysgenesis (CGD) with male to female sex reversal, which results in female genitalia without testis differentiation. The aim of this study was to look for mutations of SRY gene in a 46,XY CGD Tunisian female patient by direct sequencing. This method allowed us to identify a novel nonsense mutation L9X, occurring within the NH2 terminal domain of SRY. This novel mutation led to the appearance of a premature stop codon, resulting in a truncated protein, missing the entire HMG box functional domain and the COOH terminal domain. Because of an increased risk of developing gonadoblastoma, early molecular diagnosis allows the orientation of the clinical supervision by removing the dysgenetic gonads to prevent gonadal malignancy. Furthermore, it provides valuable information for the understanding of molecular mechanisms behind the gonadal dysgenesis.
哺乳动物的性别是由位于Y染色体上的基因SRY (Y染色体性别决定区)决定的。SRY是一种转录因子,在男性性别分化的级联启动中起关键作用。在46,XY人类中,SRY突变导致完全性腺发育不良(CGD),男性向女性性别逆转,导致女性生殖器没有睾丸分化。本研究的目的是通过直接测序寻找46,xy CGD突尼斯女性患者的SRY基因突变。这种方法使我们能够鉴定出一种新的无义突变L9X,发生在SRY的NH2末端结构域内。该突变导致一个过早终止密码子的出现,导致一个截断的蛋白质,缺失整个HMG盒功能域和COOH末端域。由于发生性腺母细胞瘤的风险增加,早期分子诊断可以通过切除发育不良的性腺来预防性腺恶性肿瘤,从而为临床监督提供方向。此外,它为理解性腺发育不良背后的分子机制提供了有价值的信息。
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引用次数: 2
Zebularine-Resistant Human Cytidine Deaminase Mutants for Optimal Chemoprotection of Hematopoietic Stem Cells 抗斑马碱人胞苷脱氨酶突变体对造血干细胞的最佳化学保护
Pub Date : 2016-08-08 DOI: 10.4172/2157-7412.1000302
Hongmei Ruan, M. Black
Acute myeloid leukemia (AML) is the most common type of acute leukemia. According to the National Cancer Institute, the new cases and deaths from AML in the United States in 2016 are estimated to be approximately 19,990 and 13,400, respectively, with a 5 year survival rate of only about 26.6% (http://seer.cancer.gov/statfacts/html/amyl. html). Thus, there is an urgent need to find more effective ways to improve the clinical treatment of AML.
急性髓性白血病(AML)是最常见的急性白血病类型。根据美国国家癌症研究所的数据,2016年美国AML的新病例和死亡人数估计分别约为19990例和13400例,5年生存率仅为26.6% (http://seer.cancer.gov/statfacts/html/amyl)。html)。因此,迫切需要寻找更有效的方法来改善AML的临床治疗。
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引用次数: 2
The Measles Virus Expression Correlates with Classical Hodgkin Lymphoma and Other Malignancies. A Short Commentary 麻疹病毒表达与经典霍奇金淋巴瘤和其他恶性肿瘤相关简短的评论
Pub Date : 2016-08-08 DOI: 10.4172/2157-7412.1000301
D. Benharroch
We have suggested, several years ago, an association between the measles virus and classical Hodgkin lymphoma. However, this relationship was not accepted by the isolated research groups which dealt with the issue. In this short commentary, we recall the traits of the virus which were suggestive of a familiarity with Hodgkin lymphoma. We mention, in addition, older articles which highlight these similarities. As the impact of apoptosis in Hodgkin lymphoma is controversial, a chapter is saved for it. Atypical measles syndrome has long been forgotten. It is mentioned in the present context. The consensus agrees that immunity waning is not a significant factor regarding the measles virus. Is it indeed?
几年前,我们曾提出麻疹病毒与经典霍奇金淋巴瘤之间存在关联。然而,这种关系并没有被处理这个问题的孤立研究小组所接受。在这篇简短的评论中,我们回顾了病毒的特征,这些特征暗示了对霍奇金淋巴瘤的熟悉。此外,我们还提到一些强调这些相似之处的旧文章。由于细胞凋亡对霍奇金淋巴瘤的影响尚存争议,故在此留一章。非典型麻疹综合征早已被遗忘。这是在本文中提到的。人们一致认为,免疫力下降不是麻疹病毒的重要因素。真的吗?
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引用次数: 1
Transmission of Bacteria during Cystic Fibrosis Educational Programs 囊性纤维化教育项目中细菌的传播
Pub Date : 2016-06-27 DOI: 10.4172/2157-7412.1000299
N. Nørskov-Lauritsen, P. O. Schiøtz
CF is a progressive, lethal disease characterized by mucous build-up in the airways and a continuous annual deterioration of lung function. The host inflammatory response is considered a central pathological feature and constitutes an important target for non-steroidal anti-inflammatory drug therapy. Airway obstruction and bacterial colonization may cause inflammation, or it may be attributable to dysfunction of the cystic fibrosis transmembrane conductance regulator. Educational programs for this group of patients increase the compliance and quality-of-life, but cystic fibrosis patients have been recommended to abstain from attendance for concerns of microbial cross infection. When guidelines for optimal hand and respiratory hygiene and cough etiquette are observed in professionally supervised CF educational programs, an increased risk of bacterial transmission has not been documented. A recommendation to avoid indoor educational events with fellow CF patients must be weighed against the benefits of educational and rehabilitation programs. Further investigations are required to clarify the relative contribution of microbiological and genetic factors to the progression of CF lung disease.
CF是一种进行性、致死性疾病,其特征是气道粘液积聚和肺功能每年持续恶化。宿主炎症反应被认为是中心病理特征,是非甾体抗炎药物治疗的重要靶点。气道阻塞和细菌定植可引起炎症,也可归因于囊性纤维化跨膜传导调节因子功能障碍。针对这类患者的教育项目提高了依从性和生活质量,但囊性纤维化患者因担心微生物交叉感染而被建议避免出席。当在专业监督的CF教育项目中遵守最佳手和呼吸卫生以及咳嗽礼仪的指导方针时,细菌传播的风险增加并未被记录。避免与CF患者进行室内教育活动的建议必须与教育和康复计划的益处进行权衡。需要进一步的研究来阐明微生物和遗传因素对CF肺病进展的相对贡献。
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引用次数: 3
Role of Genetic Testing in Lung Transplantation; Prediction of Inflammation 基因检测在肺移植中的作用炎症预测
Pub Date : 2016-06-08 DOI: 10.4172/2157-7412.1000298
Mohamed S. A. Mohamed
While the genetic matching between the donor and the recipient is essential for the success of the transplant procedure, there are other genetic factors that have the potential to significantly influence the clinical outcome. In this paper, the light is shed on this notion from a relatively new point of view.
虽然供体和受体之间的基因匹配对于移植手术的成功至关重要,但还有其他遗传因素可能对临床结果产生重大影响。在本文中,从一个相对较新的角度来阐明这一概念。
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引用次数: 7
Noninvasive Prenatal Detection of a Partial Trisomy 4 Using Whole Genome Semiconductor Sequencing 利用全基因组半导体测序无创产前检测部分4三体
Pub Date : 2016-05-20 DOI: 10.4172/2157-7412.1000297
I. Gómez-Manjón, A. Moreno-Izquierdo, M. Moreno-García, D. Escribano, F. J. Fernández-Martínez
Massively parallel sequencing of cell free fetal DNA (cffDNA) obtained from maternal plasma is used to detect fetal trisomies and selected sex chromosomal aneuploidies. Different technologies can be used to detect fetal chromosomopathies noninvasively, such as Next Generation sequencing and microarrays. In this case report, we show a procedure for detecting chromosomal imbalances as a result of balanced translocations inherited from parents, using noninvasive prenatal detection of common aneuploidies based protocol. This case study illustrates the potential power of whole-genome semiconductor sequencing when used to augment the diagnostic spectrum of noninvasive prenatal testing to detection of copy number variants.
从母体血浆中获得的游离细胞胎儿DNA (cffDNA)的大量平行测序用于检测胎儿三体和选定的性染色体非整倍体。不同的技术可用于无创检测胎儿染色体病变,如下一代测序和微阵列。在本病例报告中,我们展示了一种检测染色体不平衡的程序,这是由于遗传自父母的平衡易位,使用无创产前检测常见的非整倍体为基础的协议。本案例研究说明了全基因组半导体测序的潜在力量,当用于增加无创产前检测的诊断谱,以检测拷贝数变异。
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引用次数: 3
Clastogen-Induced Chromosomal Breakage Analysis of Suspected Fanconis Anemia Cases of Kashmir, North India 印度北部克什米尔地区疑似Fanconis贫血病例破胚原致染色体断裂分析
Pub Date : 2016-05-17 DOI: 10.4172/2157-7412.1000295
T. M. Malla, M. Zargar, F. Dar, Z. Shah
Clastogen induced chromosome breakage analysis is widely used for the differential diagnosis of Fanconi's anemia. Mitomycin-C (MMC) induced chromosome fragility test was performed on the cultured lymphocytes of 50 children with clinical suspicion of Fanconi's anemia. According to the results of the MMC test, the patients were divided into two subgroups: FA displaying typical sensitivity to MMC and non FA. The present study revealed 7(14%) of examined patients to have a FA cellular phenotype with increased MMC-induced chromosome fragility. The percentage of MMC-induced aberrant cells was increased more than 36 times in FA patients (Mean=67.14%) when compared to non FA patients (Mean=1.82). The number of MMC-induced breaks/cells was more than 09 times higher in FA patients (Mean=2.42 breaks/cell) when compared to non FA patients (Mean=0.25 breaks/cells). Our results indicate that the clastogen induced sensitivity test is a reliable in vitro method for verification of the FA cellular phenotype. The study being the first of its kind from Kashmir (North India) lays the basis for further studies on patients of this region with a clinical suspicion of FA.
崩裂原诱导的染色体断裂分析被广泛用于范可尼贫血的鉴别诊断。对50例临床怀疑为范可尼贫血的患儿进行丝裂霉素(MMC)诱导的染色体脆性试验。根据MMC检测结果,将患者分为两组:对MMC具有典型敏感性的FA组和非FA组。目前的研究显示,7(14%)被检查的患者具有FA细胞表型,mmc诱导的染色体脆性增加。与非FA患者(平均1.82)相比,FA患者mmc诱导的异常细胞百分比(平均67.14%)增加了36倍以上。mmc诱导的断裂/细胞数量在FA患者(平均2.42个断裂/细胞)比非FA患者(平均0.25个断裂/细胞)高出09倍以上。我们的结果表明,破乳原诱导敏感性试验是一种可靠的体外验证FA细胞表型的方法。该研究首次在克什米尔(北印度)进行,为进一步研究该地区临床怀疑FA的患者奠定了基础。
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引用次数: 3
Syndrome Raine, A Rare Autosomal Recessive Dysplasia Sclerotic Osteoarthritis, the First Reports of a New Mutation of Tabriz City in IRAN Raine综合征,一种罕见的常染色体隐性发育不良硬化性骨关节炎,首次报道伊朗大不里士市的一种新突变
Pub Date : 2016-05-17 DOI: 10.4172/2157-7412.1000296
S. Asadi, Ali Nazirzadeh, Elnaz Heydari, Saeedeh Habibi
Syndrome Raine, a severe skeletal dysplasia is usually caused the deaths of patients aged newborn. There are reports that patients with a milder form of the disease to live longer and have reached the age of a child. Radiological surveys show an increase in bone density generalized sclerosis and osteoarthritis. Bone density at the base of the skull, causing changes in the craniofacial skeleton, leading to specific dysmorphic signs in the figures. Symptoms of the disease include prominent forehead, proptosis, nasal root sunk, hypoplastic middle part of the face, hypoplastic nose, mouth, triangular, Atresia Cowan and intracranial calcification. Bone density in the disease so that the disease osteopetrosis is wrong. Raine syndrome is an autosomal recessive hereditary disease, which is caused by mutations in the gene is FAM20C. This gene encodes a protein that phosphorylase-kinase activity has been implicated in bio-mineralization. In this study, a patient with Raine syndrome is introduced from Iran. Based on available information, this patient is the first known case in Iran reported. Molecular analysis of the patient, a homozygous mutation new were identified. Already known about the patient's seventeenth in the world.
雷恩综合征是一种严重的骨骼发育不良,通常是引起老年新生儿死亡的患者。有报道称,患有较轻形式的这种疾病的患者寿命更长,并已达到儿童的年龄。影像学检查显示骨密度增加,全身性硬化症和骨关节炎。颅骨底部的骨密度,引起颅面骨骼的变化,导致图中出现特定的畸形迹象。该病的症状包括前额突出、鼻尖突出、鼻根凹陷、面部中部发育不全、鼻、口发育不全、三角形、闭锁及颅内钙化。骨密度在疾病中使疾病骨质疏松是错误的。雷恩综合征是一种常染色体隐性遗传病,由FAM20C基因突变引起。该基因编码一种磷酸化酶激酶活性与生物矿化有关的蛋白质。本研究从伊朗引进一例雷恩综合征患者。根据现有信息,该患者是伊朗报告的第一例已知病例。对患者进行分子分析,发现了一个新的纯合突变。已经知道病人十七岁了。
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引用次数: 5
Torticollis in 15q11.2 Microdeletion Syndrome: a Rare Association in Angelman-like Syndromes 微缺失综合征:天使样综合征的罕见关联
Pub Date : 2016-05-05 DOI: 10.4172/2157-7412.1000294
T. Szabó, A. Ujfalusi, B. Bessenyei, G. Szabó, K. Szakszon, I. Balogh, É. Oláh
15q11-13 chromosome region contains five breakpoints (BP1-BP5). Chromosomal rearrangements are common in this region. The microdeletion of BP1-BP2 region represents the 15q11.2 microdeletion syndrome associating with variable phenotype. We investigated a ten years old boy with hypotony. His motoric functions, speech and intellectual development were delayed. He suffered from epilepsy and showed dysmorphic features. Some of these dysmorphic features such us epicanthus and the clynodactyly of the fifth fingers can be observed in Angelman or Prader-Willi syndromes but have not been described in the 15q11.2 microdeletion syndrome so far. He has congenital torticollis that has been described earlier neither in this microdeletion syndrome nor in Prader-Willi - Angelman syndromes. Our aim is to find the possible mechanisms leading to the phenotype using Metilation Specific - Multi Ligand Probe Assay, Polimerase Chain Reaction and Array Comparative Genomic Hybridization. The 15q11.2 microdeletion syndrome represents an example for the incomplete penetrance and variable expressivity. Further genetic changes, such as other defective genes, further copy number variations, variability in non-coding regions, the mRNA quantity, environmental effects and epigenetic modification may also influence on the severity of the symptoms. We suggest to classify the symptoms into two groups (major and minor criteria). Depending on the existing minor criteria, this syndrome could be identified as Angelman-like or Prader-Willi-like syndromes.
15q11-13染色体区域包含5个断点(BP1-BP5)。染色体重排在这个地区很常见。BP1-BP2区域的微缺失代表了与可变表型相关的15q11.2微缺失综合征。我们调查了一名患有低眼压的十岁男孩。他的运动功能、语言和智力发育都被推迟了。他患有癫痫,并表现出畸形特征。一些畸形的特征,如上眦赘肉和五指的粘连可以在Angelman综合征或Prader-Willi综合征中观察到,但到目前为止还没有在15q11.2微缺失综合征中被描述。他患有先天性斜颈,以前既没有在这种微缺失综合征中描述过,也没有在Prader-Willi - Angelman综合征中描述过。我们的目标是利用甲基化特异性多配体探针测定、聚合酶链反应和阵列比较基因组杂交来寻找导致表型的可能机制。15q11.2微缺失综合征是不完全外显性和可变表达性的一个例子。进一步的遗传变化,如其他缺陷基因、拷贝数进一步变异、非编码区变异、mRNA数量、环境影响和表观遗传修饰也可能影响症状的严重程度。我们建议将症状分为两组(主要标准和次要标准)。根据现有的次要标准,该综合征可被确定为Angelman-like综合征或prader - willlike综合征。
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引用次数: 1
Adeno-Associated Virus (AAV)-2 Genome in Arthrobacter sp. LS16? 节肢杆菌sp. LS16的腺相关病毒(AAV)-2基因组
Pub Date : 2016-04-15 DOI: 10.4172/2157-7412.1000293
S. Arumugam, Jayandharan Gr
Figure 1: Schematic representation of AAV genome in Arthrobacter sp. LS16 annotated sequence (3736126-3743962): The 7837nt region (B) consisting R1-Arthrobacter Repeat region 1, GLYCA-partial human alpha glycoprotein hormone gene, MCS-multiple cloning site, PA-simian virus 40 poly A tail, ΔE1-partial adeno viral early protein intron, Adeno-associated virus replication and capsid gene, ORI-E.coli origin of replication, KAN-kanamycin resistance gene, LITR-left inverted terminal repeat of AAV, CMVP-cytomegalovirus promoter and R2-Arthrobacter Repeat region 2 are shown.
图1:AAV在Arthrobacter sp. LS16注释序列(3736126-3743962)中的基因组示意图:7837nt区(B)由R1-Arthrobacter Repeat区1、glyca -部分人α糖蛋白激素基因、mcs -多克隆位点、pa -猿猴病毒40多聚A尾、ΔE1-partial腺病毒早期蛋白内含子、腺相关病毒复制和衣壳基因、ORI-E组成。显示了大肠杆菌复制起源、kan -卡那霉素耐药基因、AAV的litr -左反向末端重复序列、cmvp -巨细胞病毒启动子和r2 -节杆菌重复序列2区。
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引用次数: 1
期刊
Journal of genetic syndromes & gene therapy
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